<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert title="添加商品信息" type="info" :closable="false" center show-icon></el-alert>
      <!-- 步骤条 -->
      <el-steps :active="activeIndex-0" finish-status="success" align-center>
        <el-step title="基本属性"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 表单 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <!-- 侧栏 -->
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本属性" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="{ expandTrigger:'hover',
                checkStrictly:true,
                value:'cat_id',label:'cat_name',children:'children'}"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <!-- 动态 -->
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="(item) in manyTableData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  v-for="(item,index) in item.attr_vals"
                  :key="index"
                  :label="item"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <!-- 静态 -->
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="(item) in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_name"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              list-type="picture"
              :action="uploadURL"
              :headers="headerObj"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <span>{{this.addForm.pics}}</span>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce" ref="goodsIntroduceRef"></quill-editor>
            <el-button type="primary" class="addBtn" @click="add">添加</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- Dialog -->
    <el-dialog title="图片预览" :visible.sync="picDialogVisible" width="50%">
      <img :src="previewPath" alt class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      cateList: [],
      activeIndex: 0,
      // 动态参数
      manyTableData: [],
      //   静态参数
      onlyTableData: [],
      //   表单内容
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 数据所属分类
        goods_cat: [],
        // 商品图片
        pics: [],
        // 商品介绍
        goods_introduce: '',
        attrs: []
      },
      //   规则对象
      addFormRules: {
        goods_name: {
          required: true,
          message: '请输入商品名称',
          trigger: 'blur'
        },
        goods_price: {
          required: true,
          message: '请输入商品价格',
          trigger: 'blur'
        },
        goods_weight: {
          required: true,
          message: '请输入商品重量',
          trigger: 'blur'
        },
        goods_number: {
          required: true,
          message: '请输入商品数量',
          trigger: 'blur'
        },
        goods_cat: {
          required: true,
          message: '请选择商品分类',
          trigger: 'blur'
        }
      },
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      picDialogVisible: false,
      previewPath: ''
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  },
  methods: {
    //   图片上传成功 回调
    handleSuccess(response) {
      const newPic = { pic: response.data.tmp_path }
      this.addForm.pics.push(newPic)
      console.log('this.addForm.pics', this.addForm.pics)
    },
    // 预览图片
    handlePreview(file) {
      this.previewPath = file.response.data.url
      this.picDialogVisible = true
      //   console.log(this.previewPath);
    },
    // 移除图片
    handleRemove(file) {
      // 路径
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(x => x.pic === filePath)
      // 移除
      this.addForm.pics.splice(index, 1)
      console.log('this.addForm.pics', this.addForm.pics)
    },
    async getCateList() {
      const { data: res } = await this.$http.get(`categories`)
      if (res.meta.status !== 200) {
        return this.$message.error(`${res.meta.msg}`)
      }
      this.$message.success(`${res.meta.msg}`)
      this.cateList = res.data
      console.log('级联选择器分类数据:', this.cateList)
    },
    // 级联选择器选中改变时
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    // tab切换之前 判断有没选择三级分类
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
    },
    // 商品参数tab--动态many
    async tabClick() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        // console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error(`${res.meta.msg}`)
        }
        this.$message.success(`${res.meta.msg}`)
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
        console.log('manyTableData', this.manyTableData)
      }
      // 商品属性tab --静态only
      else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        // console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error(`${res.meta.msg}`)
        }
        this.$message.success(`${res.meta.msg}`)
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.onlyTableData = res.data
        console.log('onlyTableData', this.onlyTableData)
      }
      // 商品图片tab --上传图片
      else if (this.activeIndex === '3') {
        // console.log('this.addForm.picsadd', this.addForm.pics)
      }
      // 商品内容tab
      else if (this.activeIndex === '4') {
      }
    },
    add() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('未通过验证哦')
        // 深拷贝
        const form = _.cloneDeep(this.addForm)
        // 将数据变为str,逗号拼接
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态 静态 属性
        this.manyTableData.forEach(item => {
          const manyData = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          // 数组添加对象
          this.addForm.attrs.push(manyData)
        })
        this.onlyTableData.forEach(item => {
          const onlyData = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          // 数组添加对象
          this.addForm.attrs.push(onlyData)
        })
        form.attrs = this.addForm.attrs
        console.log('form', form)
        const { data: res } = await this.$http.post(`goods`, form)
        if (res.meta.status !== 201) {
          return this.$message.error(`${res.meta.msg}`)
        }
        this.$message.success(`${res.meta.msg}`)
        this.$router.push('/goods')
      })
    }
  },
  created() {
    this.getCateList()
  }
}
</script>
<style scoped>
.el-steps {
  margin: 15px 0;
}
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.previewImg {
  width: 100%;
}
.addBtn {
  margin-top: 15px;
}
</style>